LanceH
Silver Member
Hey everyone.
I'm having a guy at work build me a diesel fuel transfer tank. Its 1/8" or .125 mill finish aluminum. Got three 4'x4' sheets at a scrap yard for $103. Its going to be 44" x 48" x 9" so it will fit below my crossover toolbox in the back of the Dodge. I sold my "L-shaped" 105 gallon tank because between my headache rack, fuel tank, and 27" wide toolbox, i just didnt have a lot of bed (its a long bed) left nor room for the gooseneck hitch.
So i thought that if I got rid of the L tank, scooted the toolbox back (giving me another foot of bed) and utilized the space under the toolbox, that things would be better. And I can only lose a little fuel capacity.
Anyway, my question is on the fuel 'fill/vent' port. Because the tank is shallow at 9" and i'm always driving on the construction site or fields or up/down steep hills, I need to have the fill port raised off the tank. At first I thought I'd put two 2" bungs welded in at opposites sided of the part of the tank that protrudes from under the toolbox. One would be for the pump and the other would have a 6 or 8" nipple extending up for the vent/fill cap. The only two options i've found are the copper colored cap that TSC sells or the older style cap that are on farm ground storage tanks. The latter of which isnt the best keeping sloshing fuel from getting out while the TSC cap is spring activiated.
I've noticed that RDS tanks have a plastic cap: RDS Auxiliary Fuel Tank/Toolbox Combo — 91 Gallon, Model# 72647 | Auxiliary-Transfer Tank + Toolbox Combos | Northern Tool + Equipment
Similar to one on your car or truck. My question is why can't I get a short 2" NPT nipple and a nipple with female "gas cap threads" on-then just weld the two together, thread the NPT end into the tank coupling and put the vented gas cap into the other? I guess my real question is what kind of threads are associated with gas caps, are they mostly the same, and where the heck can i get one?
I'd like everything to be aluminum to keep the materials the same. If i went with the TSC cap, it'd be steel and i'd have dissimilar metals. I dont want stuff sticking above the bed rails to keep the tank 'out of plain sight' by passers by.
Let me know if you all know of other caps or better ways i could build this thing. Thanks for any advice or help.
I'm having a guy at work build me a diesel fuel transfer tank. Its 1/8" or .125 mill finish aluminum. Got three 4'x4' sheets at a scrap yard for $103. Its going to be 44" x 48" x 9" so it will fit below my crossover toolbox in the back of the Dodge. I sold my "L-shaped" 105 gallon tank because between my headache rack, fuel tank, and 27" wide toolbox, i just didnt have a lot of bed (its a long bed) left nor room for the gooseneck hitch.
So i thought that if I got rid of the L tank, scooted the toolbox back (giving me another foot of bed) and utilized the space under the toolbox, that things would be better. And I can only lose a little fuel capacity.
Anyway, my question is on the fuel 'fill/vent' port. Because the tank is shallow at 9" and i'm always driving on the construction site or fields or up/down steep hills, I need to have the fill port raised off the tank. At first I thought I'd put two 2" bungs welded in at opposites sided of the part of the tank that protrudes from under the toolbox. One would be for the pump and the other would have a 6 or 8" nipple extending up for the vent/fill cap. The only two options i've found are the copper colored cap that TSC sells or the older style cap that are on farm ground storage tanks. The latter of which isnt the best keeping sloshing fuel from getting out while the TSC cap is spring activiated.
I've noticed that RDS tanks have a plastic cap: RDS Auxiliary Fuel Tank/Toolbox Combo — 91 Gallon, Model# 72647 | Auxiliary-Transfer Tank + Toolbox Combos | Northern Tool + Equipment
Similar to one on your car or truck. My question is why can't I get a short 2" NPT nipple and a nipple with female "gas cap threads" on-then just weld the two together, thread the NPT end into the tank coupling and put the vented gas cap into the other? I guess my real question is what kind of threads are associated with gas caps, are they mostly the same, and where the heck can i get one?
I'd like everything to be aluminum to keep the materials the same. If i went with the TSC cap, it'd be steel and i'd have dissimilar metals. I dont want stuff sticking above the bed rails to keep the tank 'out of plain sight' by passers by.
Let me know if you all know of other caps or better ways i could build this thing. Thanks for any advice or help.